Journal
MATERIALS LETTERS
Volume 63, Issue 23, Pages 2007-2009Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.matlet.2009.06.037
Keywords
Noble metal; Copper nanoparticles; Acetonitrile; Borohydride reduction; Inert conditions
Funding
- Japan Society for the Promotion of Science (JSPS) [19360367]
- Grants-in-Aid for Scientific Research [19360367] Funding Source: KAKEN
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Copper nanoparticles were successfully synthesized by the borohydride reduction of copper nitrate salt in water/CH3CN mixed solvent under inert argon-purged conditions. Cu nanoparticles were synthesized in large-scale production for the first time by introducing CH3CN into water and preventing oxidation during the preparation of nanoparticles. Nanoparticles were characterized by using UV-visible absorption spectroscopy, transmission electron microscopy (TEM), X-ray photoelectron spectroscopy (XPS) and X-ray diffraction (XRD) techniques. High resolution TEM Pictures showed the formation of homogeneous cubic-structured copper nanoparticles with sizes less than 100 nm. This new kind of synthesis method shows the excellent stability compared with that of citrate-protected copper nanoparticles, which may provide an efficient way to improve the fine tuning of the structure and size of copper nanoparticles. (C) 2009 Elsevier B.V. All rights reserved.
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